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r 1 <br />¥ <br />Mr. Dale Gustafson <br />October 11, 1994 <br />Page 2 <br />During our site visit, we also noted an area along the present rear yard slope where an earth <br />apparently did not move is about 6". <br />do not include specific layout features of the wall or system, such as railings to reduce die <br />possibility of petHns falling from the walls. In addition, our services do not include evaluation <br />of surface water drainage and erosion protection design of slope surfaces. <br />GEOTECHNTCAL DESIGN CONSIDERATIONS . • , j u ^ n • « Jtf.TT.c- <br />Geotechnical aspects of your project which we have considered include the fo owmg <br />A lake fetch of nearly two miles from the southwest with maximum wave heights <br />estimated at 4'. <br />• Ice sheet fotmation of several feet in thickness on the lake during winter and early <br />spring. <br />Basic firm clayey glacial Ull natural soil with a thin veneer of topsoil and local areas of <br />soft organic soils and peat near the existing lake shore. <br />Earth slope faUute along the bank above the shoreline about midway between the not* <br />and south property lines. <br />Possible local perched water conditions in the slow draining clay n*i r«* sods above lake <br />level. <br />Clay soils .vubiccr to heaving when frozen. <br />line wi* new riptap. Considering *e potential wave and tee action, we smaller <br />boulders similar to the adjacent properties. In addition to *e large <br />cobbles and boulders should be placed behind *e large boulders “ <br />between riprap pieces resting directly on *e shore. A geotextile filter fabnc should be placed